:root {
  --ink: #121214; --muted: #6b6b70; --canvas: #ffffff; --surface: #f6f5f3; --coral: #ff5640; --line: rgba(0,0,0,.08);
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) { --ink: #f2f2f3; --muted: #a1a1a6; --canvas: #0f0f10; --surface: #1c1c1e; --line: rgba(255,255,255,.1); }
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--canvas); color: var(--ink);
  font: 17px/1.55 -apple-system, BlinkMacSystemFont, "SF Pro Text", "Helvetica Neue", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}
main { max-width: 720px; margin: 0 auto; padding: 32px 20px 72px; }
header { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; margin-bottom: 40px; }
header img { width: 44px; height: 44px; border-radius: 10px; }
header a { color: var(--ink); text-decoration: none; font-weight: 700; font-size: 20px; letter-spacing: -.3px; }
nav { margin-left: auto; display: flex; gap: 18px; font-size: 15px; }
nav a { color: var(--muted); text-decoration: none; font-weight: 500; }
nav a[aria-current="page"] { color: var(--ink); }
h1 { font-size: 40px; line-height: 1.1; letter-spacing: -1px; margin: 0 0 8px; }
h2 { font-size: 21px; letter-spacing: -.3px; margin: 40px 0 8px; }
p, li { color: var(--ink); }
.lede { color: var(--muted); font-size: 19px; margin: 0 0 24px; }
.meta { color: var(--muted); font-size: 14px; }
.card { background: var(--surface); border-radius: 20px; padding: 20px 22px; margin: 16px 0; }
.card p:first-child { margin-top: 0; } .card p:last-child { margin-bottom: 0; }
a { color: var(--coral); }
ul { padding-left: 22px; } li { margin: 6px 0; }
table { width: 100%; border-collapse: collapse; font-size: 15px; margin: 12px 0; }
th, td { text-align: left; padding: 10px 8px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { color: var(--muted); font-weight: 600; }
.button { display: inline-block; background: var(--ink); color: var(--canvas); padding: 14px 22px; border-radius: 999px; text-decoration: none; font-weight: 600; }
footer { margin-top: 56px; color: var(--muted); font-size: 14px; }
@media (max-width: 520px) { h1 { font-size: 32px; } nav { margin-left: 0; width: 100%; gap: 20px; } }